Finding the Fourth Proportional to 15,069.83, 20,796.15 and 8,355.30

Step by Step Solution

1. Step 1: Write the proportion equation
   15,069.83 : 20,796.15 = 8,355.30 : x
2. Step 2: Convert to fraction form
   15,069.83/20,796.15 = 8,355.30/x
3. Step 3: Cross multiply
   15,069.83x = 20,796.15 × 8,355.30
4. Step 4: Simplify right side
   15,069.83x = 173,758,072.10
5. Step 5: Solve for x
   x = 173,758,072.10/15,069.83
6. Step 6: Final answer
   x = 11,530.20